Wifi: Use bss->age identifier for wifi scan results

This value will be used as "timestamp" and Google Play Services
uses this value for identifying sane wifi scan items.

The current timestamp (tsf=) has a different meaning, which causes
the Google Location Resolver to ignore all wifi scan entries and
therefore no location can be resolved.

This solution is already done on batched result parsing, but
missing on the traditional scans.

Change-Id: I36a1aeb666379e6a010298f09161e971012db83f
Fix frontOfTask assignment.

If all activities of a given stack were finishing, no activity was
marked as front-of-task. This confused ActivityManager, so make sure
there's always exactly one activity marked as front-of-task.

Change-Id: I087cbe10280d4a60aa5ccfaefe24a223523fb3f2
HOVER: Match notification width on tablets too

Change-Id: I5a0c55c60a8e8dd7c51b278e7747e5fc369691ac
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Conflicts:

	packages/SystemUI/res/values/gummy_dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/notification/Hover.java
HOVER: Ensure to clear after reparenting all notifications

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: I8d3735836952394942f044ebd067d7cc7a82bc2e
HOVER: Fix notification content not being updated

Change-Id: I6f5e95cfff9b78cdabd1d9aa00e0577b0ab78508
SlimRecents: Rework show top most task feature

recently introduced this feature needed a bit rework. Basic changes

- do not call settings provider on every preload to prevent high IO work.
  Use our observer for that
- Use internal flag logic to mark topmost task
- Move interpretation of the expanded state into the card
- Due that topmost task is always collapsed do not show expanded icon at all
- Minor cleanup

PS:
- set mFirstTask to null if it is not used

Change-Id: Ifaabc035b6b9bd2d4527d5b34a1bca9c80a74e32

Conflicts:

	packages/SystemUI/src/com/android/systemui/slimrecent/RecentPanelView.java
SystemUI: Fix percentage charging color does not apply

How to reproduce:
Set colors to default. Try to set only charging color.

Result:
- nothing happens when you try to charge and it is out of the max and min levels

Expected behaviour
- user choosen color applies if the user charges and it is outside the max min levels

The JB style icon which was recently introduced broke the logic completely. Clean it a
bit up and apply the colors correctly depending on the choosen style.

NOTE for the future: We have since the JB style patch 2 different behaviours....text has now indication
during charge when it is outside the min max levels. All circle styles do not have this
indication. Nothing big but we are usually consistent and should think about it.

Whatever functioniallity wise it is fixed

Change-Id: I5029d09fbf1a7e4181b082ad55d9607bcf8a63cc
HOVER: Rework showing behavior on tablets

- Don't animate out statusbar on tablets
- Cleanup

Change-Id: I4cbc283f32d11422ef0a733eab26a73277cd5812
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Merge remote-tracking branch 'upstream/kitkat2' into kk44